What is the noun that follows preposion?

The noun that follows a preposition is called the object of the preposition.

Here's an example:

* "The cat sat on the mat."

In this sentence, "on" is the preposition, and "mat" is the object of the preposition.

Here are some other examples:

* "He walked through the door." ("door" is the object of the preposition "through")

* "She arrived at the airport." ("airport" is the object of the preposition "at")

* "They talked about the movie." ("movie" is the object of the preposition "about")

It's important to note that the object of a preposition can also be a pronoun, a noun phrase, or even a clause.